LM3241TLX LM324DT LM324MTX LM324MTX/NOPB Power Path Management IC Switching Voltage Regulators 6MHz, 750mA Miniature
battery charge management ic
,power management integrated circuit
LM3241TLX LM324DT LM324MTX LM324MTX/NOPB Power Path Management IC Switching Voltage Regulators 6MHz, 750mA Miniature
1 Features
- 6-MHz (typ.) PWM Switching Frequency
-
Operates from a Single Li-Ion Cell (2.7 V to 5.5 V)
-
Adjustable Output Voltage (0.6 V to 3.4 V)
-
750-mA Maximum Load Capability
-
High Efficiency (95% typ. at 3.9 VIN, 3.3 VOUT at 500 mA)
-
Automatic Eco-modeTM and PWM Mode Change
-
6-Bump DSBGA Package
-
Current Overload Protection
-
Thermal Overload Protection
-
Soft Start Function
-
CIN and COUT are 0402 (1005) Case Size and 6.3 V of Rated-Voltage Ceramic Capacitor
-
Small Chip Inductor in 0805 (2012) Case Size
2 Applications
-
Battery-Powered 3G and 4G Power Amplifiers
-
Hand-Held Radios
-
RF PC Cards
-
Battery-Powered RF Devices
3 Description
The LM3241 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. The device can also be used in many other applications. The device steps down an input voltage from 2.7 V to 5.5 V to an adjustable output voltage from 0.6 V to 3.4 V. The output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF PA.
The LM3241 offers three modes of operation. In PWM mode the device operates at a fixed frequency of 6 MHz (typical) which minimizes RF interference when driving medium-to-heavy loads. At light-load conditions, the device enters into Eco-mode automatically and operates with reduced switching frequency. In Eco-mode, the quiescent current is reduced and extends the battery life. Shutdown mode turns the device off and reduces battery consumption to 0.1 μA (typical).
The LM3241 is available in a 6-bump lead-free DSBGA package. A high-switching frequency (6 MHz) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors are required.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM3241 |
DSBGA (6) |
1.50 mm × 1.30 mm |
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